Failure Code [Dafrmc] Can Discon (Monitor Detected) - Komatsu PC130-8 Shop Manual

SEN04121-02

Failure code [DAFRMC] CAN discon (Monitor detected)

User code Failure code
E0E DAFRMC
Contents of • Machine monitor detected communication error in CAN communication circuit between pump con-
trouble troller and engine controller.
Action of
• If cause of failure disappears, system resets itself.
machine monitor
Problem that
• Information may not be transmitted normally by CAN communication and machine may not operate
appears on
normally. (Trouble phenomenon depends on failed section.)
machine
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Disconnection in wiring har-
ness (Disconnection in wiring
1
or defective contact in con-
nector)
Ground fault in wiring har-
2 ness (Short circuit with GND
circuit)
Possible causes
and standard
value in normal
state
Hot short (Short circuit with
3
24V circuit) in wiring harness
Defective CAN terminal
4 resistance (Internal short cir-
cuit or disconnection)
5 Defective machine monitor
10
CAN disconnection (Monitor detected)
Trouble
(Machine monitor system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between CM02 (female) (8),
(9) – CP01 (female) (45), – CE02 (female)
(1), – K02 (female) (A)
Wiring harness between CM02 (female)
(10) – CP01 (female) (64), – CE02 (female)
(21), – K02 (female) (B)
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between CM02 (female) (8),
(9) – CP01 (female) (45), – CE02 (female)
(1), – K02 (female) (A), – N08 (male) (3) and
chassis ground
Wiring harness between CM02 (female)
(10) – CP01 (female) (64), – CE02 (female)
(21), – K02 (female) (B), – N08 (male) (10)
and chassis ground
a Prepare with starting switch OFF, then turn starting switch ON
Wiring harness between CM02 (female) (8),
(9) – CP01 (female) (45), – CE02 (female)
(1), – K02 (female) (A), – N08 (male) (3) and
chassis ground
Wiring harness between CM02 (female)
(10) – CP01 (female) (64), – CE02 (female)
(21), – K02 (female) (B), – N08 (male) (10)
and chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
If causes 1 – 4 are not detected, machine monitor may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)
ing without turning starting switch ON.
ing without turning starting switch ON.
and carry out troubleshooting.
ing without turning starting switch ON.
K02 (male)
Between (A) – (B)
40 Troubleshooting
1
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Max.
Voltage
5.5 V
Max.
Voltage
5.5 V
Resistance
120 ± 12 z
PC130-8